Hoist



HOIST Filed Sept. 20. 1926 2 Sheets-Shet 1 Attorvzgyfl April 22, 1930.

c. P. ROSS 1,755,840

HOIST Filed Sept. 20, 1926 2 Sheets-Sheet 2 :"K v i B J [nvenz/ m" 4Z62. 220,55

Patented Apr. 22, 1930 '.U N [TE STATES ULW'IDE P. EROSS, OF CHJZGAGO,ILLINOIS Application :filed .September 2;), r1926.

This invention relates to 'a feeding and hoisting apparatus andparticularly to a mechanism adapted to control the flow of material intoa hoistingueceptacle and :to do 5 this in response toth emovement of thehoisting receptacle. 0me object of the invention 'is "toprovicte meanswhereby a control gate, controlling discharge of material from a fixedreceptacle, is positively and.automati- .c-a'lly operated a'mo'vingreceptacle. An-

other object of "the invention is 'to provide means whereby the 'twoduring their period of co-operation are locked to each other and wherebythey "are automatically urilocke-d when the receptacle has been filledand has commenced its 'movement. (@ther objects will appear fr'om timeto time throughout the specification and claim.

My invention is illustrated more or less diagrammatically --in theaccompanying drawings, wherein' Figure'l isa verticalcross sectionshowing the-bin andt'he hucketend'a portion of the hoisting track;

"Figure2'i's an enlarged cross section of a portion of the bin,andbucket'showing in detail vtlie discharge orifice -'from the bin, andthe gate 'rxre'haliism Figure-8' a top elevation ofthe gate.

Like parts are indicated by like characters throughout.

A isa'IUading pit formed in part by enclosingwalls Itis provi'ded inthis form generally so as to provide a bin and a cavity in whichtracks-maybe positioned to carry a bucket or other moving receptacle. Ais a trough or depression formed in the sloping wall of the pit toprovide room for a portion of the bucket as it moves.

B is a receiving bin extending into the loading pit and formedpreferably in part of the lw'alls A Extending across it are supports Bwhich may carry tracks B B indicates the contents of the bin. 1

Situated at the bottom of the bin is a door C. As here shown this dooris formed of a metallic structure which is inserted into an opening inthe bin proper. This is preferable but it is not an essential feature ofthe strucer) ture. The door is provided with a chute C Serial .110.56,412.

which communicates with a somewhat larger chute C isa gate or movableclosure rovided ,for.the door. C is a track assemi'ly supported in parton the frame '6 and ypartlyon other frame members C". C arerollers.supporting'the gateC from the track "The gate is-moun'ted to bemoved fbae'l: and forth along the track by the bucket. As the bucketdescends it contacts the gate and moves it downward along "the trackopening the door of the bin to'permitdisc harge into the bucket. C Garefingle members located on the gate and reinforcing it. Fastenecl tothe gate and preferably -pivoted to these anglesis a'pa'ir of'engaginglatehes'c". Each ofthem is preferably formed as shown with twoside members each being inwardly hent as at C t Each of the latches has,an upwardly ben t portion C Mounted at the inner end of theupwardlybent portion of each of the latches is a rollerg and at theouter end a roller C. (9n its bottom "the gate is provided with bucketcontacting itops or brackets C. These brackets are shaped preferably-t0.re-ceive the rear edge of the bucket as it descends andicontac ts it.'The gate is normally held "closed by one or -more counterweights C eaeho'f which is attached to a =oa bl'e C", and at its ot'her en'd isfastoned to the gate andpasses over'a sheave 0". 'In-i'gurel theoouifter-weight has been omitted for the sake of :clearness.

The particular details of the track struc ture and arrangement form {HOport of jthe present invention. -It :is sufficient for :the purpose ofthe present invention that :the flnioket nuns beneath Ithe thin. 'fiihetrack strjucturegenevattly:eensists ota pairofuna-in double -rtraeksE1), beneath eachioif :renieh ris :a gnidei trackiDt. 'EheztimtkEeextends into 3117 the joined ate :a toad: 3E which is *inaetteetamtimmtanntfrtt.

2F m fSBE'UIIt l doxjible t trock genena'ity like thteEtmti-ks 3B mind)E itlliil'is i-trtse trackzfimtsiipointiimmediatelyhelnw amupportingfframe r-inember whih mleniher serves to apesition is uppiolzt ithetracks 56 isaifeaineimembensuppoiztingitheitmeks and fthfilT'amWml prollers H adjacent its bottom and having also flanged rollers H locatedhigher up. H is a swinging door mounted for movement on the bottom ofthe bucket H provided with a shaft H having a pair of preferably doubleflanged rollers H mounted on it. These rollers contactthe track D? andthroughout the major .part of the excursion of the bucket prevent thedoor from swinging open.

I is a contact member mounted" on the bucket H adapted to contact theengaging lugs C on the gate structure. This member strikes these lugs asthe bucket descends into the pit. I a locking member mounted on thebucket adapted to engage with the looking latches C in the manner shownin Figures land 2 and assist incausing the bucket and gate to movetogether throughout. a part of their excursion, I is a track memberadapted to be contacted, by rollers C 7. as shown particularly inFigures 1 and 2 and serving to hold the locking latch in lockingposition as shown in these figures. I is a limiting member adapted to becontacted by the rollers C and the locking latch as shown in dottedlines in Figure 2 and to'co-operate thus to unlock the lockinglatch fromthe member I and thereby to free the bucket and gate from each other.

' Although I have-shown an operative device, still it will be obviousthat many changes might be. made in size,.shape and arrangement of partswithout departing materially from the spirit of myv invention; and -Iwish sense diagrammatic, i

The use and operation of my invention are as follows: I 5 i Thisapparatus is normally part qf a coal or other material h'andling'plantin which the material to be handled is transportedlin cars and from themdumped into a receiving bin. From this bin -jmaterial is dischargedperiodically into a bucket which is. periodically' raised and lowered.The load-ofthe bucket is itself,- after having been'raised, discharged.into some other receptacle.

- When the apparatus is to be used the hoistin'g mechanismofvt'hexbucket is set inopertherefore that my showing be taken as in aation and the'bucket is lowered into the pit beneath the'binwiThe part Ioft-he bucket contactsthe lugslC of the gate and-forces the gate open inopposition-to the weightof the counter-weights -Atthe time that-thisaction commences the lockiiig latches i C have each of them engaged one"of-the members Iso that the bucket and gate are'locked together and moveas a unit-The lowering-movement"of.the buck'et'as iticontirruestherefore moves the-gate with 'itisteadily'downwar'd. i When the'buckethas been' loaded, it is raised and the gatenioves upwardly underthe influence of the counter-weight and also under the influence of thehoisting force of the bucket. itself" because the locking latch s stillhold the gate positively to the bucket. Thus it is certain that if thebucket rises, the gate will rise with it, and the locking latches areheld in locking engagement with the projections on the bucket by thetracks I which positively prevent displacement of the latches duringthis period in the operation of the'device.

When the gate has been closed, that is when it has reached the fullclosed position due to the raising of thexbucket, the forward or outward roller of each of the locking latches strikes the member I andsince it cannot move further in the direction of motion of the bucket,it moves upward along the direction of the memberI and thus it ispivoted upward about itsapiv'o' tpoint and moved out of engagement andout of contact with the locking members I, and the bucket and gatearethus separated from each other, the g-at-i' to remain in closedposition where it s held by the counterweight, tinue upward.

I claim:

In combination with a hopper, a reciprocating gate. a bucket moving intoand out of register with the hopper, an intermediate chute between thebucket and hopper, means interposed between the bucket and the gate foropening the latter after thebucket reaches the loading position, a latchpivoted on the gate, said-latch having an up-turned end and beingprovided with anti-frictionmembers, anabutment on the bucket adapted tobe engaged by.the latch whereby the bucket asi it leaves the loadingposition; positively closes the gate, the latch comprising .a linkpivoted on the gate, tracks along which the bucket, the gate and thelink travel, means including one of said tracks to hold thelatch inengagement with the bucket while the bucket is in the loading position,and means comprising a track member angularly. disposed with relation tothe gate track for forcing the link out of engagement with the abutmentwhen the gate has reached the closed position.

- Signed at Chicago, county of Cook and State of Illinois, this 3rd dayof September,

and the bucket to con- CLYDE P. ROSS.

